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SP7648 - Low Reference High Efficiency Boost Regulator

Description

The SP7648 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for single cell Li-Ion or dual cell alkaline battery applications to drive various LEDs.

The SP7648 combines low quiescent current and excellent light-load efficiency of PFM control.

Features

  • synchronous rectification, a 0.3Ω charging switch, an anti-ringing inductor switch, under-voltage lockout and programmable inductor peak current. The device can be shut down by a 1nA active LOW shutdown pin. A very low 0.288V reference voltage is optimized for driving a constant current load.

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Full PDF Text Transcription

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SP7648 Low Reference High Efficiency Boost Regulator November 2012 GENERAL DESCRIPTION The SP7648 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for single cell Li-Ion or dual cell alkaline battery applications to drive various LEDs. The SP7648 combines low quiescent current and excellent light-load efficiency of PFM control. The SP7648 features synchronous rectification, a 0.3Ω charging switch, an anti-ringing inductor switch, under-voltage lockout and programmable inductor peak current. The device can be shut down by a 1nA active LOW shutdown pin. A very low 0.288V reference voltage is optimized for driving a constant current load. APPLICATIONS  LED Driver  Camera Flash  Handheld Portable Devices Rev. 2.0.
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